2
CONTENTS
1. WARNINGS ................................................................... 3
1.1. Pay Attention to These Terms ..............................3
2. BEFORE INSTALLATION ............................................ 4
2.1. Product Receipt ........................................................4
2.2. Model Identification
................................................4
2.3. Ratings and Certifications
.....................................4
2.4. Installations at Elevation ........................................4
2.5. Component Locations ............................................5
2.6. General Safety ...........................................................6
3. INSTALLATION ............................................................. 7
3.1. Installation Codes ....................................................7
3.2. Equipment Base .......................................................7
3.3. Clearances .................................................................7
3.4. Outdoor Installation ................................................8
3.5. Combustion and Ventilation Air ..........................8
3.6. Air Supply ................................................................ 11
3.7. Water Piping ........................................................... 12
3.8. Raypak Integral Cold Water Protection .......... 13
3.9. Hydronic Heating .................................................. 14
3.10. Pool/Spa Water Chemistry ................................ 21
3.11. Gas Supply .............................................................. 21
3.12. Electrical Power Connections .......................... 23
3.13. Field Wiring Connections ................................... 24
3.14. Venting - General .................................................. 28
3.15. Vent Terminal Location ....................................... 30
3.16. Venting Installation Tips ..................................... 31
3.17. Vertical Venting Configurations
....................... 31
3.18. Horizontal Through-the-Wall and Direct
Vent (Category IV)
................................................. 32
3.19. Direct Vent - Vertical ............................................ 34
3.20. Common Venting .................................................. 35
3.21. Outdoor Installation ............................................. 35
3.22. Condensate Treatment ....................................... 36
3.23. PVC Venting Option (D-32)
................................ 37
3.24. Centrotherm™ Polypropylene Venting
Option (D-33)
.......................................................... 38
4. CONTROLS..................................................................39
4.1. Ignition Control Functions ................................. 39
4.2. High Limit - Manual Reset ................................. 39
4.3. High Limit - Auto Reset (Optional)
................... 39
4.4. Variable-Speed Injector Pump ......................... 39
4.5. Condensate Float Switch ................................... 40
4.6. Flow Switch ............................................................ 40
4.7. Low Water Cut-Off (Optional)
............................ 40
4.8. High and Low Gas Pressure Switches
(Optional)
................................................................. 40
4.9. Blocked Vent Switch ............................................ 41
4.10. User Interface ........................................................ 41
5. WIRING DIAGRAM FOR MODELS
1005A - 2005A
...........................................................47
6. START-UP
.....................................................................48
6.1. Pre Start-up ............................................................. 48
6.2. Pre Start-up Check ............................................... 48
6.3. Initial Start-up ......................................................... 48
6.4. Preparation ............................................................. 48
6.5. Start-Up .................................................................... 49
7. OPERATION
................................................................52
7.1. Lighting Instructions ............................................ 52
7.2. To Turn Off Gas To Appliance
........................... 52
8. TROUBLESHOOTING ................................................52
8.1. XTherm Error Codes ............................................ 52
8.2. Heater Errors .......................................................... 52
8.3. Heater Faults .......................................................... 52
8.4. XTherm Fault Text................................................. 53
9. MAINTENANCE .........................................................55
9.1. Suggested Minimum
Maintenance Schedule ....................................... 55
9.2. Preventive Maintenance Schedule ................. 56
9.3. Filter Maintenance ............................................... 57
10. APPENDIX
...................................................................57
10.1. Inside Air Contamination.................................... 57
11. IMPORTANT INSTRUCTIONS FOR THE
COMMONWEALTH OF MASSACHUSETTS .........58
Rev 5 reflects the following changes:
Section 2.5.1, updated Table A "Basic Product Data" on page 5.
